The USA symbol is the EAGLE, which is a five letter word. The EAGLE has been used as a symbol of the United States since 1782, when it was chosen by the Continental Congress as the official seal of the United States. The bald EAGLE was chosen because of its majestic beauty, long life, and because it is native to North America. The EAGLE has become an iconic symbol of the United States, representing freedom, strength, and patriotism.